If you want to perform auto repairs on your own Honda CX 500 then it is usually a great idea to own a Workshop Manual to keep just for reference if perhaps you want to know the best ways to remove a specific component for example, the Exhaust and fit it again the right way.
Honda CX 500 Workshop Manuals will give you specific diagnostic information for your car so if something is faulty it will help you work out what the issue is and some ways to resolve it. Then you are able to decide if you can do this by yourself or that the job is simply too big you are able to make a reservation for your CX 500 in to a local car garage.
Honda CX 500 manual